Seven files. Same article . Same 100 words . Different wrappers. The billing dashboard at the end of that session told a different story than the prompt did. Most people looking at an AI bill assume the cost lives in the prompt. How long is it? How complex. How many back-and-forth turns? That is the wrong place to look. The output format is where the money actually goes, and almost nobody checks it. A plain Markdown article, an HTML block, a Mermaid chart, a React component, an SVG graphic. All can contain the exact same information while consuming radically different numbers of tokens. Then the publishing workflow begins. The expensive format often breaks first. The chart that rendered perfectly inside Claude becomes raw code inside WordPress. The “advanced” output turns into screenshots, manual fixes, code blocks, plugin searches, and reformatting work. Not because the content failed. Because the wrapper did. What the Numbers Actually Say One session. One topic. One afternoon.…